• 말소리와 음성과학
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• 제11권4호
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• pp.109-116
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• 2019

본 연구는 정상군과 음성장애 환자군의 문단낭독 시 휴지 및 호흡단락 특성을 파악해보고자 시행되었다. 정상군 40명과 기능적 음성장애 환자군 40명을 대상으로 PAS(Phonatory Aerodynamic System) 중 Running Speech를 이용하여 '가을' 문단을 낭독하게 하였다. 이를 통해 흡기 동반 및 미동반, 어절간 및 어절내 휴지와 호흡단락을 구분하고 이에 대한 기술통계 및 집단간 통계적 유의성을 검증하였다. 그 결과 흡기를 동반한 휴지횟수는 환자군이 더 높았으나 흡기를 동반하지 않은 휴지횟수는 정상군이 더 높은 수치를 보였다. 어절경계 중 휴지가 동반된 비율은 환자군이 더 높았고 호흡단락당 음절수는 정상군이 유의하게 더 높았다. 음성장애 화자군은 성대폐쇄부전으로 인한 호흡지지가 정상군보다 부족하므로 휴지 시 흡기를 동반하는 경우나 호흡단락의 수가 더 많은 것으로 사료된다. 이는 일상대화의 자연스러움을 저해할 수 있으므로 음성장애 화자의 중재 시 휴지와 호흡단락의 빈도를 적절히 조절하는 것도 평가 및 중재에 포함해야 할 것이다.

• 한국콘텐츠학회논문지
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• 제19권12호
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• pp.270-278
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• 2019

본 연구는 젊은 성인 음성장애 환자 집단과 노인 음성장애 환자 집단을 대상으로 문단낭독시 공기역학적 특성을 비교해보고자 시행되었다. 20-45세의 남성 음성장애 환자 12명과 60세 이상의 남성 음성장애 환자 9명이 연구에 참여하였다. PAS(Phonatory Aerodynamic System)의 Running Speech를 이용하여 문단을 낭독하게 하고 공기역학 측정치를 구하였다. 그 결과 노인집단은 젊은 성인집단보다 더 긴 지속시간과 더 적은 기류량 및 기류체적을 보였다. 그러나 그 차이는 발성지속시간에서만 유의하게 나타났다. 공기역학 측정치는 일반적으로 노인보다 젊은 성인이 모든 측면에서 비정상 소견을 보일 것이라고 예상하지만 본 연구결과 노인집단이 보인 측정치는 발성지속시간을 제외하고 기류량과 기류체적은 젊은 성인집단과 비슷한 수치를 보인것으로 나타났다. 그러므로 노인 음성장애 환자의 연속발화시 공기역학 측정치가 갖는 의미를 해석할 때 기류와 기류체적은 연령뿐 아니라 발화자료, 폐 기능 등 다양한 요건을 함께 고려해야 한다.

• 대한후두음성언어의학회지
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• 제14권2호
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• pp.94-97
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• 2003

Background and Objectives : Bowing of the vocal fold, a bowed edge of the vocal fold results from various disorder causes glottic incompetence resulting in voice disorders. The results of treatment were not satisfactory even though a variety of methods of treatment were applied. The goal of this study is to evaluate of efficacy of the non-surgical, voice therapy in patients with vocal fold bowing. Materials and Method : Twenty two patients of vocal fold bowing not resulting from vocal fold palsy and sulcus vocalis were analyzed. After voice therapy and medical treatment, parameters of perceptual, acoustic, aerodynamic analysis and stroboscopic findings were compared those of pretreatment results. Results and Conclusion : Jitter, shimmer and maximal phonation time were significantly improved and subjective satisfaction was improved in 73% of patients. In the videostroboscopic examination, vocal fold gap was decreased in 27% of patents. The result of this study indicates that voice therapy alone has effect in treatment of vocal fold bowing. Voice therapy is one of the mainstay of treatment of vocal fold bowing.

• 말소리와 음성과학
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• 제5권1호
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• pp.63-69
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• 2013

This study attempted to investigate the characteristics of Phonation Threshold Pressure and Phonation Threshold Airflow of Patients who have Functional voice disorder. 50 subjects participated in study (32 subjects were patients who had functional voice disorders and 20 subjects were normal adults). The PAS (Phonatory aerodynamic system, model 6600, KAY electronics, Inc.) was used to measure the data and to do the analysis. Data from the Phonation Threshold Pressure was measured using voicing efficiency of the PAS protocol. Data from the Phonation Threshold Airflow was measured using Maximum Sustained Phonation of the PAS protocol. Those were used because of the ease of phonation. The results of this study showed that the differences in Phonation Threshold Pressure and Phonation Threshold Airflow between patients who had functional voice disorder and normal adults could be significant index. Patients who had functional voice disorder showed more higher figures than normal adults. These results suggest that Phonation Threshold Pressure and Phonation Threshold Airflow are very useful in diagnosing the voice disorder. The measured data also provided useful information for diagnosing patients with vocal fold diseases.

• 대한후두음성언어의학회지
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• 제27권1호
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• pp.35-39
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• 2016

Background and Objectives : Voice therapy is proven to be effective, but patients are reluctant to receive the therapy when physicians recommend it. This phenomenon may due to patients'lack of trust in or low satisfaction level of the therapy. This study aimed to evaluate patients'satisfaction level after voice therapy and identify factors that could increase the satisfaction. Materials and Methods : First, the fraction of patients who were recommended voice therapy ahead and completed it was studied, and survey was conducted on those who finished ten voice therapy sessions. The patients'1) satisfaction level during the therapy, 2) satisfaction level about physician's explanation about the therapy, 3) willingness to recommend, 4) satisfaction level about the results were assessed, and was correlated with overall satisfaction level. In each category, patients' gender-, age-, and disease type-related differences were analyzed. Results : Patients under 19 years old were most satisfied during the voice therapy; patients above 40 years old showed statistically significantly higher satisfaction level regarding satisfaction with physician explanation about treatments and with treatment results compared to other ages groups. Patients above 40 also showed the highest willingness to recommend. 26.5% of patients either refused to or discontinued voice therapy. 84.3% were satisfied with treatment results. Considering variabilities among factors, patients'satisfaction with physician explanation about treatment and willingness to recommend had positive correlation. Conclusion : Though 26.3% of patients received voice therapy when physicians recommended, patients who completed the therapy were overall satisfied.

• 말소리와 음성과학
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• 제1권4호
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• pp.147-157
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• 2009

The purpose of the study is to develop the normal voice database and to analyze the acoustic characteristics of Korean adults' voices by gender using MDVP. Eight categories in the 34 parameters of MDVP were analyzed in the voices of 170 Korean normal adults taken from /a/ vowel. Among them, Fundamental Frequency Parameters and Frequency Perturbation Parameters were significantly different by gender. In addition, Fundamental Frequency Parameters of our data were remarkably different from the data suggested in the MDVP program which currently used in clinics. Therefore, the data obtained from the current study can be effectively used for the diagnosis of voice disorders of Korean adults as the standard parameter values of MDVP.

• 대한후두음성언어의학회지
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• 제8권1호
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• pp.33-37
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• 1997

Incomplete glottic closure of vocal cord atrophy is the common cause of dysphonia. Patients with vocal cord atrophy have complaints such as dysphonia, vocal fatigue, abnormal sensation in the throat, laryngeal pain, cough or sputum like functional voice disorders. Many investigators could not confirm the pathologic laryngeal structure because of their minute pathology. But recent advancements of laryngeal examinations made the many clinicians to detect minimal laryngeal pathology and to have mind the treatment for the vocal cord atrophy. But the results were less effective than their thoughts, the reasons of ineffectiveness were not known well. Authors have found the Hyperfunctional movement of the supraglottis during phonation before and after thyroplasty type I for vocal cord atrophy. Then we have applied the combined modality treatment with thyroplaty type I and voice therapy for relieve of hypefunctional movement of the supraglottis. These options have had more imporved results.

• 음성과학
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• 제15권2호
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• pp.89-97
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• 2008

There is a number of clinical conditions that affect directly or indirectly the physical properties of the vocal folds and thereby the pressure waveforms of elicited sounds. If the relationships between the clinical conditions and the voice quality are sufficiently reliable, it should be possible to detect these diseases or disorders. The focus of this paper is to determine the set of features and their values that would characterize the speaker's state of vocal folds. To the extent that these features can capture the anatomical, physiological, and neurological aspects of the speaker they can be potentially used to mediate an unobtrusive approach to diagnosis. We will show a new approach to this problem supported with results obtained from two disordered voice corpora.

• 대한후두음성언어의학회지
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• 제19권2호
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• pp.85-88
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• 2008

Several parameters are used for the assessment of phonatory function and voice quality in clinical settings. Glottic airflow, subglottal pressure, mean phonation time, laryngeal resistance and voice efficiency are the most commonly used aerodynamic parameters. Aerodynamic analysis is developed to evaluate phonatory energy source and to estimate laryngeal efficiency. Also these measurements have shown the good correlation with perceptions of breathiness and findings of glottic competence. Aerodynamic study is important to understand relationships between pulmonary and phonatory function.

• 대한후두음성언어의학회지
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• 제20권1호
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• pp.63-67
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• 2009

Background and Objectives: In patients with asthma, increased obstruction and resistance of airway result in impairment in the generation of voice. Allergy and nasal polyposis, which are frequently observed in patients with asthma, are other factors that affect the vocal performance. Bronchodilators and steroids are commonly used in the treatment of asthma, and these agents also have been reported to be associated with voice changes. The aim of this study is to evaluate the voice quality in patients with mild to-moderate asthma by subjective and objective methods. Materials and Methods: A total of 36 patients with asthma established in the Department of Respiratory Medicine were included in this study. 23 were women and 13 were men, with a mean age of 51.7 years. The average duration of asthma was 77.0 months. All patients had mild-to moderate asthma. Acoustic and aerodynamic analyses were performed and the movements of the vocal cords were examined by videolaryngostroboscopy (VLS). Voice Handicap Index (VHI) and GRABS scales were used for subjective evaluations. Results: 50% of patients suffered from dysphonia and FO was 119.3${\pm}$23.7 Hz in male and 198.2${\pm}$18.4 Hz in female patients. There were no significant differences in average shimmer and NHR between females (4.90${\pm}$2.95% ; 0.1O${\pm}$0.04 dB) and males (4.64${\pm}$2.45% ; 0.20${\pm}$0.15 dB). However, the value of jitter was greater for females (2.60${\pm}$1.92%) than for males (1.21${\pm}$0.84%). The VHI score was above the normal limit in 35%, and VLS findings were shown diverse abnormality in 89% asthmatics from mucosal change to hyperfunction of supragottis and contact granuloma. But duration of illness and steroid dose did not correlate with these findings. Conclusion: Subjective and objective abnormality was shown in more than 50% of asthmatic patients. We suggest that persons who suffer from asthma should be examined for possible voice disorders by laryngologist. Additionally, appropriate medical care and voice therapy should be provided for those who have voice disorders associated with asthma.